The company said the problem has been contained, and it has been securely processing credit and debit card data since June 11, a day after the U.S. Secret Service flagged a possible security problem. It hasn't been determined whether any specific customer's data was stolen.

The breach was first disclosed in June, as the investigation began with third-party forensics experts and the Secret Service.

According to the company, data exposed and potentially stolen includes card numbers, cardholder names and expiration dates.

Some of the suspected breaches date back to October 19, 2013.

No P.F. Chang's in Indiana was included in the affected locations.

A list of affected locations, as well as suspected dates of the breaches and a statement from P.F. Chang's CEO Rick Federico, is available here.

As Target did with its infamous breach, P.F. Chang’s is providing identity protection services for those who may have been affected.

No Pei Wei restaurants were affected by this security compromise.

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